4-29 js DOM基础知识

// document.getElementById("xx") id获取名字 $(#xx)

            // document.getElementsByTagName(xx) 获取标签 $("xx")

            // document.getElementsByClassName(xx) 获取class $("xx")

            // document.getElementById().innerHTML = newhtml; 改变元素$("#div").html 

            // document.getElementById().setAttribute(attr.va;) 改变属性 

            // document.getElementById().style.PropertyPriority改变样式("#.div").attr()

            // ("#.div").css()

            //  document.getElementById(‘id’).appendChild(p); 

            //  document.removeChild(element)； 删除元素

            //  document.replaceChild(newnode,oldnode)；替换元素

            //  document.getElementById(id).onclick = function(){code}; 点击事件